Cartier Calibre de Cartier (Reference W7100014) is a men's or unisex automatic watch, featuring a robust 42mm steel case with a matching steel bezel. It boasts a striking black dial with Roman numerals, protected by a sapphire crystal, and is paired with a black alligator leather strap secured by a hidden steel fold clasp. Powering this timepiece is the Cartier 1904-PS MC automatic movement, offering a 48-hour power reserve. With a water resistance of 3 ATM, it is suitable for everyday wear. This pre-owned watch is in very good condition, showing only minor, intangible signs of wear, and comes complete with its original box and papers. Located in Geneva, Switzerland, it is available for CHF 5,500 (approximately $6,876), with the price being negotiable, and it needs to be procured.